A fiber filtering apparatus includes: an enclosure including an upper box and a lower box communicating with the upper box; a strainer installed in the upper box along a longitudinal direction; a plurality of fiber yarn media configured to be fixed to upper and lower fixing means each coupled to upper and lower parts of the strainer; a plurality of fiber ball media configured to be embedded in the lower box to form a second filtering layer; a first pipe configured to be formed on one side wall on the lower part of the upper box and introduced with raw water during filtration and drain backwashing water during backwashing; and a second pipe formed on one side wall on a lower part of the lower box and drain filtered water during the filtration and introduced with washing water during the backwashing.

A fiber filtering apparatus includes: an enclosure including an upper box and a lower box communicating with the upper box; a strainer installed in the upper box along a longitudinal direction; a plurality of fiber yarn media configured to be fixed to upper and lower fixing means each coupled to upper and lower parts of the strainer; a plurality of fiber ball media configured to be embedded in the lower box to form a second filtering layer; a first pipe configured to be formed on one side wall on the lower part of the upper box and introduced with raw water during filtration and drain backwashing water during backwashing; and a second pipe formed on one side wall on a lower part of the lower box and drain filtered water during the filtration and introduced with washing water during the backwashing.

A filter is provided. The filter includes: a filter cartridge, comprising a side wall and an upper end; a cartridge cover on the upper end of the filter cartridge, wherein the cartridge cover and the filter cartridge together define a first chamber. The filter further includes a filter chamber in the first chamber, a fiber filter material in the filter chamber, a water intake channel disposed on the filter cartridge or on the cartridge cover and in fluid communication with the filter chamber, and a water discharge channel in fluid communication with the filter chamber. The filter may be a water filter. An above-ground pool is also provided including the filter.

A filter is provided. The filter includes: a filter cartridge, comprising a side wall and an upper end; a cartridge cover on the upper end of the filter cartridge, wherein the cartridge cover and the filter cartridge together define a first chamber. The filter further includes a filter chamber in the first chamber, a fiber filter material in the filter chamber, a water intake channel disposed on the filter cartridge or on the cartridge cover and in fluid communication with the filter chamber, and a water discharge channel in fluid communication with the filter chamber. The filter may be a water filter. An above-ground pool is also provided including the filter.

A filter apparatus includes a vessel, a filter media positioned in the vessel, a feed inlet positioned in the vessel above the filter media, and a knockout pot coupled to the vessel and arranged to collect a gas discharged from the vessel. The apparatus also includes a draft tube positioned in the vessel and filled with the filter media and an eductor including a fluid inlet, a fluid suction port, and a fluid outlet directed into the draft tube, a first fluid supply coupled to the fluid inlet to deliver a flow of a first fluid, and a conduit arranged to connect the knockout pot to the fluid suction port. The eductor operates to draw a portion of the gas into the eductor in response to the flow of the first fluid, the first fluid and the gas forming a backwash mixture that is discharged into the draft tube via the fluid outlet to induce a roll of the filter media during a backwash process.

A filter apparatus includes a vessel, a filter media positioned in the vessel, a feed inlet positioned in the vessel above the filter media, and a knockout pot coupled to the vessel and arranged to collect a gas discharged from the vessel. The apparatus also includes a draft tube positioned in the vessel and filled with the filter media and an eductor including a fluid inlet, a fluid suction port, and a fluid outlet directed into the draft tube, a first fluid supply coupled to the fluid inlet to deliver a flow of a first fluid, and a conduit arranged to connect the knockout pot to the fluid suction port. The eductor operates to draw a portion of the gas into the eductor in response to the flow of the first fluid, the first fluid and the gas forming a backwash mixture that is discharged into the draft tube via the fluid outlet to induce a roll of the filter media during a backwash process.

The invention is directed to methods of providing backwash processes for a synthetic compressible medium filter system. More specifically, the system may include a backwash pump and air blower, and the processes may include at least three sequences of: air and water wash; air purge; and medium compression. The backwash process may be triggered by one or more of a pressure, time point, and/or turbidity set point. The air and water wash sequence may include breaking and washing the medium. The air purge sequence may include removing substantially all of the air entrapped in the medium by providing a backwash water flow for a period of time; and a medium compression sequence compressing the medium while avoiding exposing the medium to air, including introducing raw water and where the backwash and raw water provide enough energy to compress the medium without introduction of air into the medium.

The present invention aims at limiting the pressure loss and smoothly discharging water treated by ion exchangers to the outside of the apparatus. Ion exchanging apparatus 1 has outer vessel 3 that has inner space 2; and ion exchanger support 4 that separates at least a part of inner space 2 into upper space 2a and lower space 2b and that can support ion exchangers to be loaded in upper space 2a. At least a part of an upper surface of the ion exchanger support is made from at least one screen which supports the ion exchangers and which has a flow path allowing water treated by the ion exchangers to flow into the lower space 2b.

A fluid filtration system is disclosed herein. The filtration system includes a main tubular housing defining an interior chamber and having an outlet opening at a top end thereof and an inlet opening at a bottom thereof. A tubular inlet housing extends vertically into the interior chamber of the main housing through the inlet opening of the main housing. The tubular inlet housing has a hollow interior filled with shards of permanent magnets, a plurality of outlet portals located in the interior chamber proximate the bottom of the main housing, and an inlet opening at a bottom thereof. An inlet conduit is connected to the inlet opening of the tubular inlet housing. An adjustable fluid pump and can force the fluid from a supply of fluid to be filtered upwards through the inlet conduit at varying speeds. A permeable but compact horizontal layer of medium capable of trapping particulates is provided in the interior chamber of the main tubular housing adjacent the tubular inlet housing. The layer includes filtering particles that are attached to the magnets. Forces of magnetism produced by the shards of permanent magnets and gravity constrain the horizontal layer of filtering medium to maintain in place the layer of filtering particles. The adjustable fluid pump, an air pump connected to the inlet conduit, or electromagnets or vibrators mounted on an outer surface of the main housing can be used to disrupt the compactness of the layer of filtering particles to permit trapped particulates to be released and washed away from the layer of filtering particles.

A fluid filtration system is disclosed herein. The filtration system includes a main tubular housing defining an interior chamber and having an outlet opening at a top end thereof and an inlet opening at a bottom thereof. A tubular inlet housing extends vertically into the interior chamber of the main housing through the inlet opening of the main housing. The tubular inlet housing has a hollow interior filled with shards of permanent magnets, a plurality of outlet portals located in the interior chamber proximate the bottom of the main housing, and an inlet opening at a bottom thereof. An inlet conduit is connected to the inlet opening of the tubular inlet housing. An adjustable fluid pump and can force the fluid from a supply of fluid to be filtered upwards through the inlet conduit at varying speeds. A permeable but compact horizontal layer of medium capable of trapping particulates is provided in the interior chamber of the main tubular housing adjacent the tubular inlet housing. The layer includes filtering particles that are attached to the magnets. Forces of magnetism produced by the shards of permanent magnets and gravity constrain the horizontal layer of filtering medium to maintain in place the layer of filtering particles. The adjustable fluid pump, an air pump connected to the inlet conduit, or electromagnets or vibrators mounted on an outer surface of the main housing can be used to disrupt the compactness of the layer of filtering particles to permit trapped particulates to be released and washed away from the layer of filtering particles.